Method of forming composite cords and braids



Oct. 25, 1932. w. MENDEL I METHOD OF FORMING COMPOSITE CORDS AND BRAIDS Filed April 7, 1930 Patented o... 25, 1932 UNITED STATES PA'lENT OFFICE W'II|I|IAM MEN DEL, OF BEVERLY, NEW JERSEY, ASSIGNOB TO NEIDIGE VIBOOSE com- .mnomnrnnnnmeron, NEW JERSEY, ACORPOBATION OF DELAWARE METHOD IORMING COMPOSITE GORDS AND BBAIDS Application filed April 7, 1980. Serial No. 442,887.

My invention may be advantageously em:

' ployed to make filamentous materials which may be utilized in the roduction of ornamental textile fabrics, or instance, for the manufacture of bat crowns and trimmings.

The object and effect of my invention is to produce strings, threads, stranded cords, braids, etc., havmg the capacity for being brilliantly dyed which is characteristic of artificial textile filaments formed of cellulose acetate or cellulose-nitrate, or similar cellulosic com ounds, and with the greater tensile strengt characteristic of natural textile filaments such as hemp, jute, flax, etc.

As hereinafter described, an essential feature of my invention is that such a natural filament or filaments, having the desired tensile strength, may be used as a core of the desired product, which is partially or com pletely covered with an artificial filament or filaments of such cellulosic material, twisted therewith or wrapped or'braided thereon;

such cellulosic covering material being subsequently subjected to the action of a solvent thereof to such a degree as to cause it to coalesce and adhere to its core. The latter The product thus formed is characterized not only by greater-tensile strength but by greater resistance to bending stresses than v materials ofthe same size formed of either the natural or artificial materials employed in the composite product, and has the ornamental appearance 7 ofv extremely. lustrous My invention includes the. various novel features of rocedure and product hereinafter more efinitely specified.

In said drawing: Fig. I is a fragmentary enlarged perspective view of a cord wherein a single filament of covering material is twisted with a single filament of core ma-- .terial.

Fig. II is a cross sectional view of the structure shown in Fig. I.

Fig. III shows a' fragment of the structure of F ig. I after the covering material has been sub'ectedto the action of a solvent thereof.

Fig. a cross sectional view, similar to wrapped with a single filament of covering material.

Fig. VII is a cross sectional view of the structure shown in Fig. VI.

Fig. VIII shows a fragment of the struc- Y ture of Fi VI after the covering material has'been su jected to the action of a' solvent.

Fi' IX is a cross sectional view similar to Fig. VII but showing the structure of Fig. VI with the core material integrated with the covering material by the softening and deforming effect of the solvent of the latter.

Fig. X is a cross sectional view of the structure shown in Fig. IX but compressed and dried to form a substantially flat band or ribbon, wherein the core material is entirely sheathed by the coveringmaterial.

Fig. XI is a fragmentary enlarged rspective view of a braid wherein a plura ity of core filaments are interlaced with a plurality of covering filaments;

Fig. XII is a cross sectional view of the structure shown in Fig. XI.

Fig. XIII showsa fragment of the structure of Fig. XI after the covering material has been subjected to the action of a solvent.

Fig. XIV is a cross sectional view similar .to Fig. XII but showing the structure of Fig. vXI with the core material'integrated with the covering materialby the softening and deforming efiect of the solvent-of the latter.

Fig. XV is a plan view of the structure of Fig. XIV compressed and dried to form a substantially flat land or ribbon wherein the" core material is visible at intervals throughout the length of the fabric. 1 1K Fi XVI is a cross sectional view of the brai shown in Fig. XV.

Referring to the form of my invention shown in Figs. I to V inclusive; the core 1 consists of a natural fiber or fibers of hemp or other material having the desired tensile stren%th. The covering material 2 is an artificial lament or filaments formed of a coagulated cellulosic compound such as celluloseacetate or cellulose nitrate. Said main Fig. I form a composite cord 3, but the two materials are primarily separate and distinct, as indicated in Fig. II. Said com- 5 posite product 3 is then immersed in ordrawn through a liquid solvent of the artificial cellulosic material 2 but which has no solvent effect upon the natural material 1. If the material-.2 is a product of cellulose acetate, it nay be subjected to the action of ethyl acetate, or a mixture of alcohol and ether, both of which are suitable solvents for cellulose acetate. If the material 2 is a product of cellulose nitrate, acetone may be emplo ed as the solvent. In any case; the eifect of t e solvent is to cause the cellulosic material 2 to coalesce upon and adhere to the natural corematerial 1, as indicated in Fi s. III and IV, so that the cord 3 is then ofsubstantially circular cross section as indicated in Fi IV, and it may be dried in that form. owever, either before or after it is dried, and preferably before it is completely dried, the cord 3 may be compressed to form a substantially flat band or ribbon, as indicated at 5 in Fig; V, conveniently by-running said cord 3 between parallel rollers. In such flattened form the core 1 and covering material 2 alternate from edge to edge thereof through the length of 0 the product 5.

In the form of my invention shown in F1 s. VI to X inclusive, the core 7 is formed o a plurality of filaments of natural fibers such as above contemplated which, while in sub- 5 stantiall straight parallel relation, are wrapped with a covering filament or filaments 8 of the cellulosic material aforesaid, to form'the cord product 9. As indicated in Fig. VII, said core 7 and covering 8 are pri- 0 marily separate and distinct. However, by subjecting them to the action of a solvent of the covering material 8, the latter is caused to coalesce upon the core material 7, and adhere thereto so as to form a substantially con- 5 tinuous sheath for the corematerial, as indicnted in Figs. VIII and IX. As'indicated in Figs. VII and VIII; the composite cord 9. is substantially round. However, either before or after it is dried, it may be com ressed to form a substantially fiat band'or ri bon as indicated at. 10 in Fig. Referring to the form of my invention shown in Fi XI to XV inclusive, the core 12 is a plura ity of filaments of natural fibers such as above contemplated, which may be terials 1 and 2 twisted together as indicated arranged in parallel relation in a substantially common plane, as indicated in Fig. XII with covering filaments 13 of cellulosic material aforesaid, interlaced therewith by the operation of a suitable braiding mechanism to form the substantially flat braid 14, in which the core material 12 and covering material 13 are separate and distinct, as indicated in Figs. XI and XII. However, by subjecting said braid 14; to the action of a suitable solvent'of the material 13, as above contemplated, said material 13 is caused to coalesce upon and adhere to the core material 12, as indicated in Figs. XIII and XIV.

The composite braid product shown in Figs. 'XIII and XIV may be compressed either before or after it is dried, to a flatter band or ribbon 15, as indicated in Figs. XV and XVI, wherein the core material 12 is visible at intervals throu hout its length.

As above noted; all of t e composite prod-' ucts above described are capable of being more brilliantly colored, by ordinary dyes, than the natural textile fibers forming the cores thereof, and may be made like ordinary thread or yarn suitable for being woven, knit, or otherwise utilized in textile fabrics. However, the products above described may be used singly in the formation of any suitable fabric. For instance, the braid shown in Figs. XV and XVI has a sheen exceeding that of the most lustrous natural straw and may be formed of such width that successive convolutions thereof may be sewed together to form a hat crown.

It is to be understood that the forms of my invention above described are merely typical, and that various modifications may be made therein without departing from the essential features of my invention, as defined in the'appended claims.

I claim: 7

1. The method of forming a stringlike structure, which consists in assembling natural and artificial filaments in a dry state, and thereafter subjecting the structure to the action of a solvent of the artificial filament material until it coalesces and adheres to the natural filament material, and compressing said structure. 1

2. The method of forming a stringlike structure, which consists in assemblingnatural and artificial filaments in a dry state, and thereafter subjecting the structure to the ,action of a solvent of the artificial filament material until it coalesces and adheres to the natural filament material, and compressing said structure until the materials thereof are integrated, while the artificial material is softened with the solvent.

3. The method of forming a stringlike structure, which consists in assembling nutural and artificial filaments in a dry state, and thereafter subjecting the structure to the action of a solvent of the artificial filament material until it coalesces and adheres to the filament material, entirely encircling the structure, which consists in assembling natthis th day of natural filament material, and compressing latter. said structure until it is substantially fiat. In

4,, The method of forming a stringlike signed my name at Burlington,

March 1930.

MENDEL.

New Jersey,

ural and artificial filaments in a dry state, and thereafter subjecting the structure to the action of a solvent of the artificial filament material until it coalesces and adheres to the natural filament material upon the exterior thereof, covering and concealing said natural material.

50 The method of? forming a stringlilre structure, which consists in assembling nat ural and artificial'filaments, in a dry state,

and thereafter subiectiug the structure to action of a solvent of the artificial filament material untilit coalcsccs and adheres to the natural filament material upon the exterior thereof, covering and concealing said natural material, and compressing said artificialraaterial upon said natural material fi. The method or forming a stringlihe structure, which consists in assembling natural and artificial filaments, in a dry state, and thereafter subjecting the structure to the action or a solvent of the artificial filament material until it coalesces and adheres to the natural filament material upon the exterior thereof, covering and concealing said natural material, and compressing said artificial material upon said natural material until the structure is substantially fiat.

7. The method of forming a stringlike structure, which consists in assembling nat ural and artificial filaments, in interlaced relation, in a dry state, and thereafter subjectingthc structure to the action of a solvent of the artificial filament material until it coalesces and adhere to the natural filament material, and compressing said structure.

8. The method of forming a stringlike structure, which consists in assembling nat ural and artificial filaments, in interlaced relation, in a dry state, and thereafter subjecting the structure to theaction of a solvent of the artificial filament material until it coalesces and adheres to the natural filament material, and compressing said structure uni til it is substantially flat.

9. The method of forming a composite structure, which consists in assembling soluble and insolublefilaments, in-a dry state, and thereafter subjecting the structure to the action of a solvent of the soluble filament material until it coalesces upon, adheres to,

' and forms an outer coating upon the insoluble filament material.

10. The method of forming acomposite structure, which consists in assembling soluble and insoluble filaments, in dry state, and thereafter subjecting the structure to the action of a solvent'of thesoluble filament material until it coalesces upon, adhere to, and forms an outer coating upon the insoluble testimony whereof, I have hereunto- 

